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One‐electron Optical Properties of a Nanorice with a Nonconcentric Core
Author(s) -
Kulish Volodymyr V.,
Tomchuk Petro M.
Publication year - 2012
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200900063
Subject(s) - nanoshell , optical conductivity , electron , wave function , plasmon , physics , condensed matter physics , shell (structure) , conductivity , molecular physics , core (optical fiber) , quantum dot , quantum , atomic physics , materials science , quantum mechanics , optics , composite material
We investigate optical properties of nanoshells (small composite clusters composed of a dielectric core and a metal shell; contribution of the shell dominates in the optical properties of the whole cluster) far from plasmon resonance. In particular, nanoshells with the shape of a stretched rotation ellipsoid (nanorice) are considered. For such shell‐type particle the electron wavefunction, the electron energy, the wavenumber spectrum, and the matrix elements of corresponding optical transitions were found. Using these quantities, the classical optical conductivity of such shells (the quantum effects are not considered) and the quantum optical conductivity (relevant addendums for the classical conductivity that are caused by the quantum effects like the electron spectrum discreteness) were found. Oscillating nature of the dependence of these addendums on the incident light frequency is established. The optical conductivity expressions are generalized for the case of a nanorice particle with a weak nonconcentricity.